Dr Hayk Hakobyan (UTFSM) Mr Orlando Soto (UTFSM)
The novel Hamamatsu Multi Pixel Photon Counter Array S12045(X) consists of an array of 3600 APD (avalanche photo diode) pixels, each one working in Limited Geiger mode with inverse bias voltage around 70[V]. The pixels are grouped into 16 independent electronic channels (16 MPPCs with 225 pixels each). We studied the main features of each channel on 2800 MPPC arrays, at different temperatures (5ºC, 7ºC, 20ºC). Two measurement systems were built to extract Gain, Breakdown Voltage, Photon Detection Efficiency (PDE), Inter-pixel Cross-talk and Dark rate for each electronic channel. The complete characterization process of novel MPPC arrays used in GlueX experiment (Jefferson Lab, Hall D) as well as the hardware and the performed data analysis will be presented, which include new analytical expressions to obtain the number of photo-electrons and Inter-pixel Cross-Talk. All result are corresponding to different operational condition (temperature, bias voltage). The dynamical behavior of characterization parameters and the analysis of the best operational point will be discussed.
|quote your primary experiment||JLab HallD Gluex|